A mine explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch

Abstract

The utility model provides a kind of mining explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch, belong to the technical field of mining intelligent combined switch;Solve the problems such as overstep tripping in traditional feeder switch, expansion inconvenience, protocol incompatibility and response lag;The technical scheme for solving the above technical problems is as follows: using modularization splicing box body of sub-feed and total-feed, configuring quick-opening door mechanism, electric trolley double locking and manual switching device, integrated control cavity integrated communication management system, realize data acquisition and linkage control through unified protocol, improve safety combined with explosion-proof and intrinsically safe design;The utility model is applied to mine.

Description

Technical Field

[0001] This utility model provides a mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch, belonging to the field of intelligent combination switch technology for mines. Background Technology

[0002] In the underground working environment of coal mines, a safe and reliable power supply system is of paramount importance. As a key piece of equipment, the power supply switch plays a crucial role in protecting circuits and controlling power transmission.

[0003] Currently, traditional mine power supply switches have many problems. For example, in some power supply switches, the circuit breaker and electrical components are fixed inside the housing, requiring disassembly of the main line for maintenance, which is cumbersome and consumes a lot of time and manpower. Meanwhile, some electric trolley-type power supply switches use a quick-connect power-on / off method, which places strict requirements on the motor driving the switch. In the harsh working conditions of underground mines, the large vibrations during opening and closing of mechanical circuit breakers can easily lead to incomplete closure at the connection point, resulting in excessive resistance and severe overheating. This poses a significant safety hazard in explosive environments such as those containing methane gas, and also causes unnecessary power loss. Furthermore, in emergency circuit disconnection of conventional electric power supply switches, if the electric trolley malfunctions, manually extending the switch body to complete the power disconnection takes a long time, resulting in insufficient efficiency of the emergency plan.

[0004] Furthermore, traditional mine power supply switches typically operate with the main feeder and branch feeders operating independently. Failures in branch feeders can easily trigger cascading trips in the main feeder, and the fixed architecture makes it difficult to adapt to the expansion needs of the working face. Adding new branch circuits often requires equipment replacement, leading to inconvenience in capacity expansion. The centralized control system for the main feeder faces the problem of inconsistent communication interfaces and protocols between branch feeders from different manufacturers, resulting in difficulties in data acquisition and information exchange. Additionally, the complex internal structure of the centralized control module poses safety hazards, and remote control response is relatively slow. Moreover, the lack of an effective collaborative protection mechanism between the main and branch feeders makes fault location and repair difficult, impacting underground production efficiency. Utility Model Content

[0005] To address the problems of existing power supply switches in terms of maintenance convenience, safety, data transmission, and equipment protection, this utility model proposes a mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum power supply switch to meet the needs of safe and efficient production in underground coal mines.

[0006] The technical solution adopted in this utility model is as follows: a mine explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch, including a modular sub-feeder box and a main feeder box spliced ​​together. The door cover of the sub-feeder box and the main feeder box are equipped with a button assembly and a manual advance and retreat mechanism. The door cover is connected to the corresponding box through a quick-opening door mechanism. The door cover of each sub-feeder box is equipped with a sub-feeder locking mechanism and a sub-feeder manual tripping mechanism. The feeder box is divided into a feeder body cavity and a feeder wiring cavity, while the main feeder box is divided into a main feeder body cavity, a main feeder wiring cavity, a central control cavity, and a secondary wiring cavity. The interior of the feeder body cavity is equipped with an assembled feeder motor core, which is fixedly connected to the first electric trolley. The first electric trolley is equipped with a first motor. There is a first electrical lock between the first electric trolley and the assembled feeder motor core for exiting the power-off and opening the cover. The assembled motor core is equipped with a first mechanical lock that prevents the door cover from being opened when entering the vehicle. The main feeder body cavity is equipped with a main feeder mechanism, which is fixedly connected to the second electric trolley. The second electric trolley is equipped with a second motor. There is a second electrical lock between the second electric trolley and the main feeder mechanism for exiting, power off, and opening the cover. The main feeder mechanism is equipped with a second mechanical lock that prevents the door cover from being opened when the vehicle enters.

[0007] Furthermore, the feeder body cavity is provided with multiple feeder combinations arranged vertically and horizontally. The feeder combinations arranged vertically and horizontally are separated by a middle partition. The feeder wiring cavity has a wiring cavity that is vertically connected to the feeder combinations arranged vertically and horizontally. A partition is provided between the feeder body cavity and the feeder wiring cavity. The partition is provided with multiple wiring terminals, stationary contacts corresponding to the permanent magnet mechanism, and grounding posts.

[0008] Furthermore, the main feeder body cavity, the main feeder wiring cavity, the central control cavity, and the secondary wiring cavity are separated by partitions, and the partitions are equipped with multiple wiring terminals, corresponding stationary contacts of the permanent magnet mechanism, and grounding posts.

[0009] Furthermore, the interior of the feeder body cavity is also equipped with a first control transformer, a first trolley controller, a first fuse, a first 10,000-turn switch, a first camera, and a first display screen. The first trolley controller is used to control the first electric trolley to move forward and backward, and the first camera collects the temperature of the assembled feeder core inside the feeder body cavity.

[0010] Furthermore, the main feeder body cavity is also equipped with a second control transformer, a second trolley controller, a second fuse, a second 10,000-turn switch, a second camera, and a second display screen; the central control cavity is equipped with a transformer, a communication management unit, a power supply, a network switch, a third 10,000-turn switch, a mouse, and a monitor. The second trolley controller is used to control the second electric trolley to move forward and backward, and the second camera collects the status of the stationary contacts in the main feeder body cavity.

[0011] Furthermore, the quick-opening door mechanism includes a sliding shaft, two fixed shaft seats, a handle, a handle sleeve, a drive shaft, a hinge seat, and a hinge head. The handle is fixedly connected to the handle sleeve, the handle sleeve is fixed in the middle of the drive shaft, and the two ends of the drive shaft are respectively hinged to the two fixed shaft seats. The hinge head is fixed to the hinge seat by a pin, and the hinge head is set at one end of the sliding shaft and connected to the fixed shaft seats through the sliding shaft.

[0012] Furthermore, the manual tripping mechanism includes a knob, a tripping rod connecting sleeve, a tripping rod, a tripping rod mounting base, a tripping rod fixing base, a tripping push rod, a tripping disc, and a manual tripping base. The manual tripping base is fixed to the housing, and a tripping push rod is fixed on the manual tripping base. The tripping rod fixing base is fixed on the manual tripping base to fix the tripping rod. The tripping rod connecting sleeve is used to connect the tripping rod and the knob outside the housing. A tripping top block is fixed on the tripping rod, and the tripping top block is used to push the tripping push rod located on the manual tripping base to realize the manual tripping operation.

[0013] Furthermore, the feeder locking mechanism includes a locking seat, a limit seat, a push-button spring, a rotary knob, a rotary shaft, and a rotary locking rod. One end of the rotary shaft is connected to the rotary knob, and the other end is connected to a first rotary switch. A locking seat is installed on one side of the rotary knob, and a rotary locking rod is installed on the locking seat. A limit seat is installed on one side of the rotary knob to limit the rotation angle of the rotary knob to °. A fan-shaped locking plate is provided on the rotary knob. When the first rotary switch connected to the rotary knob is rotated to the ON state, the fan-shaped locking plate presses against the door cover and prevents the door from opening, thereby realizing the locking relationship.

[0014] Furthermore, a single feeder box can be integrated into a two-way feeder combination or a four-way feeder combination, or several feeder boxes can be arbitrarily spliced ​​together by bolts as needed.

[0015] Furthermore, the branch feeder wiring cavity and the main feeder wiring cavity are connected through a through-hole. After the cable is introduced through the horn nozzle or cable connector, it is fixed to the ground through the grounding post.

[0016] The advantages of this utility model compared to the prior art are as follows: By optimizing the linkage architecture of the sub-feeders and the main feeder and the design of the centralized control system, this utility model effectively solves the problems of over-tripping, inconvenient expansion, protocol incompatibility and response lag in traditional feeder switches. It not only realizes real-time monitoring and fault linkage protection of the main feeder on the operation status of the sub-feeders, but also improves the flexibility of the architecture and reduces the expansion cost through modular design. At the same time, the unified communication protocol eliminates information silos, and the permanent magnet mechanism shortens the fault response time. The optimized explosion-proof and intrinsically safe design enhances safety, and the intelligent fault location function significantly improves operation and maintenance efficiency, fully meeting the safe and efficient power supply needs of underground coal mines. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a front structural diagram of the present invention; Figure 2 for Figure 1 Top view; Figure 3 Schematic diagram of the quick-opening door mechanism of this utility model Figure 1 ; Figure 4 Schematic diagram of the quick-opening door mechanism of this utility model Figure 2 ; Figure 5 This is a schematic diagram of the quick-opening door mechanism of this utility model in use. In the figure, (a) is the closed position and (b) is the open position. Figure 6 This is a schematic diagram of the feeder door cover locking structure of this utility model; Figure 7 This is a schematic diagram of the manual tripping structure of the present invention; In the diagram: 1 is a nine-pin terminal, 2 is a cable connector, 3 is a horn nozzle, 4 is a manual tripping mechanism for branch feeders, 5 is a branch feeder interlocking mechanism, 6 is a quick-opening door mechanism, 7 is a button assembly, 8 is a video observation window, 9 is a manual forward / reverse mechanism, 10 is a branch feeder enclosure, 11 is a main feeder enclosure, 12 is a main feeder body cavity, 13 is a stationary contact, 14 is a branch feeder body cavity, 15 is a branch feeder wiring cavity, 16 is a central control cavity, 17 is a main feeder wiring cavity, 18 is a secondary wiring cavity, 19 is a fixed shaft seat, 2 0 is the hinge pad, 21 is the hinge seat, 22 is the drive shaft, 23 is the handle sleeve, 24 is the handle, 25 is the sliding shaft, 26 is the hinge head, 27 is the 10,000-turn knob, 28 is the 10,000-turn shaft, 29 is the limit seat, 30 is the 10,000-turn locking rod, 31 is the button spring, 32 is the locking seat, 33 is the trip lever mounting seat, 34 is the trip plate, 35 is the trip lever fixing seat, 36 is the trip push rod, 37 is the manual trip base, 38 is the trip lever, 39 is the trip lever connecting sleeve, and 40 is the knob. Detailed Implementation

[0018] like Figures 1 to 7 As shown, this utility model provides a mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum power supply switch, including a housing, with multiple cable connectors 2 or horn nozzles 3 on the side of the housing; a door cover is provided on the front of the housing, with a video observation window 8, a button assembly 7, and a manual advance / reverse mechanism 9 on the door cover, and the door cover is connected to the housing through a quick-opening door mechanism 6.

[0019] The enclosure includes a sub-feeder enclosure 10 and a main feeder enclosure 11. The sub-feeder enclosure 10 is divided into a sub-feeder body cavity 14 and a sub-feeder wiring cavity 15. The sub-feeder body cavity 14 is divided into two sub-feeder combinations, with a middle partition between them. The sub-feeder wiring cavity 15 is connected vertically and is separated from the sub-feeder body cavity 14 by a rear partition. The rear partition is equipped with multiple nine-core terminals 1, stationary contacts 13, and grounding posts. The sub-feeder enclosure 10 can be configured with two sub-feeders in one row and four sub-feeders in two rows. The sub-feeder enclosures 10 are connected in pairs by bolts, and the number of circuits can be set according to requirements. The sub-feeder enclosure 10 is equipped with a sub-feeder locking mechanism 5 and a sub-feeder manual tripping mechanism 4, which are related to the door cover.

[0020] The main feeder box 11 is divided into a main feeder body cavity 12, a main feeder wiring cavity 17, a central control cavity 16, and a secondary wiring cavity 18. The main feeder body cavity 12, the main feeder wiring cavity 17, the central control cavity 16, and the secondary wiring cavity 18 are separated by partitions. The partitions are equipped with multiple nine-core terminals 1, stationary contacts 13, and grounding posts. The main feeder box 11 and the sub-feeder box 10 are fastened together by bolts. The main feeder wiring cavity 17 and the sub-feeder wiring cavity 15 are interconnected.

[0021] The feeder body cavity 14 is equipped with an assembled feeder motor core, a first control transformer, a first trolley controller, a first electric trolley, a first fuse, a first 10,000-turn switch, a first camera, and a first display screen. The assembled feeder motor core inside the feeder body cavity 14 is fixedly connected to the first electric trolley by screws. The first electric trolley is equipped with a first motor. The first trolley is controlled to move forward and backward by the first trolley controller, and the information is displayed on the first display screen by the first camera. There is a first electrical lock between the first electric trolley and the assembled feeder motor core for power-off and cover opening when exiting. The assembled motor core is equipped with a first mechanical lock that prevents the door cover from being opened when entering the vehicle.

[0022] The main feeder body cavity 12 houses the main feeder mechanism, a second control transformer, a second trolley controller, a second electric trolley, a second fuse, a second 10,000-turn switch, a second camera, and a second display screen. The central control cavity 16 houses a transformer, a communication management unit, a power supply, a network switch, a third 10,000-turn switch, a mouse, and a 15-inch monitor. The main feeder mechanism inside the main feeder body cavity 12 is fixedly connected to the second electric trolley with screws. The second electric trolley is equipped with a second motor, and its forward and backward movement is controlled by the second trolley controller. The information is displayed on the second display screen via the second camera. A second electrical interlock is provided between the second electric trolley and the main feeder mechanism for power-off and cover opening upon exiting. A second mechanical interlock is provided on the main feeder mechanism to prevent the cover from being opened upon entering.

[0023] The quick-opening door mechanism 6 includes a sliding shaft 25, two fixed shaft seats 19, a handle 24, a handle sleeve 23, a drive shaft 22, a hinge seat 21, and a hinge head 26. The handle 24 is fixedly connected to the handle sleeve 23, and the handle sleeve 23 is fixed in the middle of the drive shaft 22. The two ends of the drive shaft 22 are respectively hinged to the two fixed shaft seats 19. The hinge head 26 is fixed to the hinge seat 21 by a pin. The hinge head 26 is set at one end of the sliding shaft 25 and is connected to the fixed shaft seat 19 through the sliding shaft 25.

[0024] The feeder locking mechanism 5 includes a locking seat 32, a limit seat 29, a push-button spring 31, a rotary knob 27, a rotary shaft 28, and a rotary locking rod 30. The rotary knob 27 is connected to the rotary shaft 28. Pulling down the rotary locking rod 30 allows the rotary knob 27 to be rotated, thus achieving a locked state where the door cannot be opened while energized. The limit seat 29 is installed on the right side of the rotary knob 27, which can limit the rotation angle of the rotary knob 27 to 45°. The rotary knob 27 has a fan-shaped locking plate. When the first rotary switch connected to the rotary knob 27 is rotated to the ON position, the fan-shaped locking plate presses against the door cover, preventing the door from opening, thus achieving the locking relationship.

[0025] The manual tripping mechanism 4 includes a knob 40, a tripping rod connecting sleeve 39, a tripping rod 38, a tripping rod mounting base 33, a tripping rod fixing base 35, a tripping push rod 36, a tripping disc 34, and a manual tripping base 37. The manual tripping base 37 is fixed to the housing, and the tripping rod fixing base 35 is fixed on the manual tripping base 37 to fix the tripping rod 38. The tripping rod connecting sleeve 39 is used to connect the tripping rod 38 and the knob 40 outside the housing. The manual tripping operation is achieved by pushing the tripping push rod 36 located on the manual tripping base 37 through the tripping top block on the tripping rod 38.

[0026] This utility model proposes a technical solution of "distributed feeder-centralized feeder combined architecture + centralized control system". Through the high reliability of the opening and closing control of the permanent magnet mechanism, the centralized control module with a unified communication protocol, and the dual protection design of explosion-proof and intrinsically safe, it solves the shortcomings of existing feeder switches in terms of power supply coordination, centralized control compatibility and safety protection, and meets the needs of intelligent and unmanned mining in coal mines.

[0027] The separate feeding and main feeding mechanisms of this utility model can respectively achieve electrical interlocking with the electric trolley and mechanical interlocking with the door cover. When the electric trolley is in the driving state, the door cover cannot be opened.

[0028] The door cover of the low-voltage permanent magnet mechanism combined vacuum feeder switch device provided by this utility model adopts a sliding quick-opening door mechanism 6. The upper and lower parts of the door cover adopt an internal locking form, which is less prone to rust and facilitates the opening and closing of the door cover compared to the ordinary external locking form. It also forms a mechanical locking function with the feeder locking mechanism 5. A 10,000-turn knob 27 is installed at the rear of the 10,000-turn shaft 28. Rotating the 10,000-turn knob 27 disconnects the power switch, de-energizing the main body cavity. The drive shaft 22 of the door cover must be rotated 45 degrees to open the door. In addition, the rubber strip installed at the flange serves as a waterproof measure, ensuring the sealing and safety of the switch and improving the safety and reliability of the combined vacuum feeder switch.

[0029] The second camera inside the main feeder body cavity 12 of this invention collects the contact status of the main feeder mechanism in real time, while the first camera in the branch feeder body cavity 14 monitors the temperature of the branch feeder mechanism. The images are transmitted to a 15-inch display in the central control cavity 16 via a network switch. The communication management unit polls the current and voltage data of the branch feeder enclosure. When a short-circuit current of more than 1000A is detected in the branch feeder, the main feeder trips within 15ms. The display supports touch operation, and operators can remotely control the opening and closing of the branch feeders and the main feeder by clicking the interface buttons with a mouse.

[0030] The feeder box 10 of this utility model adopts a layered design. A single feeder box 10 can integrate two-way or four-way feeder combinations (separated by a middle partition), or several feeder boxes can be arbitrarily spliced ​​together to form 4, 6, 8, or 10-way combinations as needed by bolts. The splicing point between the main feeder box 11 and the feeder box 10 is also connected by bolts. The feeder motor cores in the feeder body cavity 14 and the main feeder body cavity 12 are respectively fixed to the top of the first electric trolley and the second electric trolley by bolts. The electrical connection between the motor core and the electric trolley adopts plug-in terminals for easy and quick disassembly. The feeder wiring cavity 15 and the main feeder wiring cavity 17 are connected by a through wiring hole. After the cable is introduced through the horn nozzle 3 or the cable connector 2, it is fixed to the ground through the grounding post to avoid the risk of leakage.

[0031] The cable entry / exit device of this utility model can be interchanged and universally used with either cable connector 2 or flared nozzle 3.

[0032] Regarding the specific structure of this utility model, it should be noted that the connection relationships between the various component modules adopted in this utility model are definite and achievable. Except as specifically described in the embodiments, their specific connection relationships can bring about corresponding technical effects and solve the technical problems proposed by this utility model without relying on the execution of corresponding software programs. The models of the components, modules, and specific components appearing in this utility model, the connection methods between them, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, unless specifically described, are all publicly disclosed content in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by those skilled in the art before the application date, or belong to conventional technology, common knowledge, and other existing technologies in this field. There is no need to elaborate, which makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain corresponding physical products based on this technical means.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch, characterized in that: It includes modular feeder boxes (10) and main feeder boxes (11) that are spliced ​​together. The door covers of both feeder boxes (10) and main feeder boxes (11) are equipped with button assemblies (7) and manual advance / reverse mechanisms (9). The door covers are connected to the corresponding boxes through quick-opening door mechanisms (6). Each feeder box (10) is equipped with a feeder locking mechanism (5) and a feeder manual tripping mechanism (4) on its door cover. The feeder box (10) is divided into a feeder body cavity (14) and a feeder wiring cavity (15), and the main feeder box (11) is divided into a main feeder body cavity (12), a main feeder wiring cavity (17), a central control cavity (16), and a secondary wiring cavity (18). The feeder body cavity (14) is equipped with an assembled feeder motor core. The assembled feeder motor core is fixedly connected to the first electric trolley. The first electric trolley is equipped with a first motor. The first electric trolley and the assembled feeder motor core are provided with a first electrical lock for exiting the power-off and opening the cover. The assembled motor core is provided with a first mechanical lock that prevents the door cover from being opened when entering the vehicle. The main feeder body cavity (12) is equipped with a main feeder mechanism. The main feeder mechanism is fixedly connected to the second electric trolley. The second electric trolley is equipped with a second motor. The second electric trolley and the main feeder mechanism are provided with a second electrical lock for exiting, power off, and opening the cover. The main feeder mechanism is provided with a second mechanical lock that prevents the door cover from being opened when entering the vehicle.

2. The mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The feeder body cavity (14) is provided with multiple feeder combinations arranged in parallel. The feeder combinations are separated by a middle partition. The feeder wiring cavity (15) has a wiring cavity that is connected to the feeder combinations in parallel. A partition is provided between the feeder body cavity (14) and the feeder wiring cavity (15). The partition is provided with multiple wiring terminals, stationary contacts (13) corresponding to the permanent magnet mechanism, and grounding posts.

3. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The main feeder body cavity (12), the main feeder wiring cavity (17), the central control cavity (16), and the secondary wiring cavity (18) are separated by partitions. The partitions are provided with multiple wiring terminals, corresponding stationary contacts (13) of the permanent magnet mechanism, and grounding posts.

4. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The feeder body cavity (14) is also equipped with a first control transformer, a first trolley controller, a first fuse, a first 10,000-turn switch, a first camera and a first display screen. The first trolley controller is used to control the first electric trolley to move forward and backward. The first camera collects the temperature of the assembled feeder core inside the feeder body cavity (14).

5. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The main feeder body cavity (12) is also equipped with a second control transformer, a second trolley controller, a second fuse, a second 10,000-turn switch, a second camera, and a second display screen; the central control cavity (16) is equipped with a transformer, a communication management unit, a power supply, a network switch, a third 10,000-turn switch, a mouse, and a display screen. The second trolley controller is used to control the second electric trolley to move forward and backward. The second camera collects the status of the stationary contact (13) in the main feeder body cavity (12).

6. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The quick-opening door mechanism (6) includes a sliding shaft (25), two fixed shaft seats (19), a handle (24), a handle sleeve (23), a drive shaft (22), a hinge seat (21), and a hinge head (26). The handle (24) is fixedly connected to the handle sleeve (23), and the handle sleeve (23) is fixed in the middle of the drive shaft (22). The two ends of the drive shaft (22) are respectively hinged to the two fixed shaft seats (19). The hinge head (26) is fixed on the hinge seat (21) by a pin. The hinge head (26) is set at one end of the sliding shaft (25) and connected to the fixed shaft seat (19) through the sliding shaft (25).

7. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The manual tripping mechanism (4) includes a knob (40), a tripping rod connecting sleeve (39), a tripping rod (38), a tripping rod mounting base (33), a tripping rod fixing base (35), a tripping push rod (36), a tripping disc (34), and a manual tripping base (37). The manual tripping base (37) is fixed on the housing. A tripping push rod (36) is fixed on the manual tripping base (37). The tripping rod fixing base (35) is fixed on the manual tripping base (37) to fix the tripping rod (38). The tripping rod connecting sleeve (39) is used to connect the tripping rod (38) and the knob (40) outside the housing. A tripping top block is fixed on the tripping rod (38). The tripping top block is used to push the tripping push rod (36) located on the manual tripping base (37) to realize the manual tripping operation.

8. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The feeder locking mechanism (5) includes a locking seat (32), a limit seat (29), a push button spring (31), a rotary knob (27), a rotary shaft (28), and a rotary locking rod (30). One end of the rotary shaft (28) is connected to the rotary knob (27), and the other end of the rotary shaft (28) is connected to a first rotary switch. A locking seat (32) is installed on one side of the rotary knob (27), and a rotary locking rod (30) is installed on the locking seat (32). A limit seat (29) is installed on one side of the rotary knob (27) to limit the rotation angle of the rotary knob (27) to 45°. A fan-shaped locking plate is provided on the rotary knob (27). When the first rotary switch connected to the rotary knob (27) is rotated to the ON state, the fan-shaped locking plate presses against the door cover and prevents the door from opening, thereby realizing the locking relationship.

9. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: A single feeder box (10) can be integrated into a two-way feeder combination or a four-way feeder combination, or several feeder boxes (10) can be arbitrarily spliced ​​together by bolts as required.

10. A mine-use explosion-proof and intrinsically safe low-voltage permanent magnet mechanism combined vacuum feeder switch according to claim 1, characterized in that: The feeder junction box (15) and the main feeder junction box (17) are connected through a through-hole. After the cable is introduced through the horn nozzle (3) or the cable connector (2), it is fixed to the ground through the grounding post.

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